Hi, I bit the bullet and upgraded from 1.5 to 2.0 today, but now some pages don't load properly. You can see the problem if you go to http://www.surrealroad.com/digital/ and try any of the pages labelled "digital intermediate..." (or any of its subpages)
What happens is that "Error 404 - Not Found" is displayed where the actual content should be.
I'm not using .htaccess (nor was I for WP 1.5), so the custom structure I'm using is:
which seems to work for posts but not all the pages